French police arrested six members of an Islamic terrorist cell early Monday suspected of planning attacks against well-known figures in France, according to sources close to the investigation, reports FRANCE 24.

The suspects are all in custody after coordinated raids across the Paris region.

The suspects were all previously known to the police, and are suspected of being involved in a bank robbery in the Seine-et-Marne department and “planning to commit other armed robberies,” a police source told AFP news agency.

The group includes four French nationals, as well as a man from Benin and another from Comoros. They are all aged between 22 and 38.

According to French law, the suspects can be held for questioning for five days before being charged or released.